Foraminous-ledge stove.



PATENTED MAR. 26, 1907.

I P, J. MOONEY. PORAMINOUS LEDGE STOVE APPLICATION FILED AUG 16,1906

UNITED STATES PATENT orrron.

PATRICK J. MOONEY, OF BRAZIL, INDIANA.

FORAMlNOUS-LEDGE STOVE.

Specification of Letters, Patent.

Patented March 26, 1907.

Application filed August 16,1906. Serial No. 330,928.

To all whom it may concern.-

Be it known that I, PATRICK J. MOONEY, a citizen of the United States, residing at Brazil, in the county of Clay and State of Indiana, have invented .certain new and useful Improvements in Foraminous-Ledge Stoves, of which the following is a specification.

My present invention contemplates certain new and useful improvements in means j for promoting the thermal efliciency of coke,

coal, wood, and all other substances used as fuel for heating and cooking and other purposes, and is an advance in the art of which the prior invention of my allowed application for Letters Patent of the United States, filed on or about November 21, 1905, Serial No. 288,430, is a step. My former invention just referred to was evolved from a recognition of the fact that a high per cent. of theefiiciency of fuel is wasted under ordinary conditions as plete combustion being ordinarily, before my last invention, wasted through the outletpipe. The said prior invention comprehended a foraminous fire plate or cover, which isintended to rest directly upon the bed of fuel and be supported thereby, the gases entering the magazine below the grate-bars or in any other manner to gain access to the fuel and well as economies in the consumption ofthei fuel. In this invention, as will be more fully hereinafter described, I employ aforaminousledge stove embodying a retort or preparingmagazine for the fuel, said retort being placed in contiguity to the bed of live fuel, as before stated, and there being provided an eduction device for the gaseous products resulting from the slow heating of the fuel in the retort, so that the said products may escape into the live-fuel magazine at the proper elevation above the foraminous fire-plate cover of my former invention, so that such products may be consumed by coming in contact with the fiamejets issuing through the fof raminous fire plate cover and then escape a result of the incomplete combustion of carbon with oxygen, the carbonaceous oxid or carbon lnonoxid resulting from this incombeing confined to the proper degree by means of the said plate, and thereby caused to freely commingle with the fuel and with the combustible gases evolved, so as to result in the complete combustion of the fuel. Furthermore, the provision of aforaminous plate, as explained fully by the description forming part of my prior ap lication,-provides a plurality of drafts whic act in the nature of suc tion-orifices to insure proper combustion, the carbon monoxid burning as it issues. out of said'orifices and the latter thereby constituting flame-jets.

My present invention embodies as, afeature this foraminous fire plate or cover, before referred to, and in connection therewith means whereb the fuel, especially if it be wood, coal, co e, or other solid fuel, is prepared for prop er burning when finally forming a part of the fuel-bed, while at the same time thisfuel which is being prepared for consumption is caused to evolve gaseous products by contiguity to the bed of live fuel, (being placed in a retort,) and thereby assists in promoting the efficiency of combustion, as-

@ through the chimney.

1 present invention.

such fuel thus prepared will burn to much better advantage after being placed in the fire-box, and the annoyance resulting from large periodical clouds of smoke 1S reduced,

while at the same time great economy results,

because a large proportionof this volatile matter 15 combustible and is consumed, and

. the carbon is therefore economized.

For a full description of the invention and the merits thereofand also to acquire a knowledge of the details of construction of the means for effecting the result, reference is to be had to the following description and ac companying drawings, in which fF'gure 1 is a vertical sectional view of stove embodying the improvementsof my Fig. 2 is a horizontal sectional View showing for the purpose of IOO illustration only one of the many forms of v which the foraminous fireplate or cover and foraminous ledge may partake. I

Corresponding and like parts are referred to in the followin description and indicated in allthe views 0 the drawings by the samereference characters.

Referring to the drawings, the numeral 1 designates the fire-box of a stove, which may be of any desired construction and design,

except as hereinafter set forth.

2 designates the grate, and '3 the ash-pit IIO underneath the grate.

Any desired form and arrangement of ash-pit and fuel-receiving door with their dampers maybe provided, the same in the present instance beingdesignated 4 and 5, respectively, and any desired form and arrangement of draft-pipe 6 may be used,

7 designates one formof' the'foraniinous fire plate or cover, the same being placed directly upon the bed of fuel in the lire-box 1 and provided with apertures 8, forming jets or orifices, and 9 designates a ledge, whi h may be either horizontal or inclined and which may extend around the inner side of the wall of the stove at the upper end of the fire-box, said ledge-being of any predetermined weight and extent, according to the different conditions which may be found to exist. This ledge may bepused, as a shelf, upon which the foraininous' fire plate or cover 7 may be placed when for any reason, such as replenishing the fire-box with fuel,

the plate needs to be removed from the fuelbed, whiehwill preclude any waste of heat or damage to the plate by unnecessary cooling and will also facilitate the convenient use of the plate. The primary object of the ledge 9 is, however, to form a means for.conveniently conveying moisture or other volatile gases, whether combustible or not, from the reserve store or magazine of fuel in the retort or reservoir 10. The shape of this reservoir or retort is not essential within the purview of myinvention, nor is its exact location within the stove, so long as it allows the fuel in the reservoir to come into sulticient proxforaminous.

- imity to the live coals withinthe fire box 1 as to be heated thereby, and thus evolve the moisture and other gaseous products. the present instance the retort 10 extends alongthe innermost rear side of the stove to practically the full height of the fire-box and is provided with a door 11, 'so that the reserve fuel maybe inserted in the retort, and in the present instance also the ledge 9 forms the top of the retort, although this is a minor feature of construction. The ledge Q'has formed with itor secured to it on its under side an eduction-tube 12, which is forarninous, as shown, being provided with apertures 13, and to this extent the ledgeitself is At the same time it is obvious that my invention is not limited to the exact construction shown so long as there are means provided for feeding the said products from'the reserve store of fuel from the retort into the fire-box above the foraminous fireplate 7.

with one end projected into the fire-box 1 at an elevation above the fire-plate 7, and this projected end is open, although there is preferably provided a check-valve 14 adjacent to such end and within the tube 12.

In order to accomplish this result, the tube is in the present instance located In the practicahoperation of the device of thence conveyed past the check-valve 14 out of the projected end of said tube into the fire-box 1, at such a point above the fire-plate 7 that the flame-jets issuing through the orifices 8 of said fire-plate will consume said gaseous products or in any event will assist in driving them off through the draft-pipe 6, and thereby accomplish all of the objects set forth at the outset of the specification. The check-valve 1 1 insures that these gaseous products evolved from the fuel in the retort will not return thereto.

Having thus described the invention, what is claimed as new is 1. In a stove, the combination of a firebox, a foraminous firelate adapted to be for the purpose specified, and a retort connected to said stove in sufiicient proximity to said fire-box to be heated by the fuel therein, and there being provided ap'assage from the retort to the fire-box, at a point above the foraminous fire-plate, and a check-v'alye in said passage.

3. In a stove, the "combination of a firebox, a retort in suflicient-proxiinity to said fire-box to be heated bythe fuel therein, a foraminous firelate adapted to be. supported on the be of fuel in said fire-box, and a foraminous ledge constituting the top of the retort and providing a-passage opening in the fire-box at a point, above the firelate.

4. In a stove, the'combination o a firebox, a retort contiguous to said fire-box, a foraminous fire-plate adapted to be superposed on the bed offuel in said fire-box, a tube provided with apertures in its walls, said apertures opening into the retort and one end of said tube projecting into the fire.- box at an elevation above the foraminous In testimony whereof I affix my signature in presence of two Witnesses.

vPATRICK J. MOONEY. [L. s.'] Witnesses: I

FREDERICK (J. WI'IT, MARTIN M. MORAN. 

